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Get college assignment help at uniessay writers A small remote-control car with a mass of 1.62 moves at a constant speed of = 12.0 in a vertical circle inside a hollow metal cylinder that has a radius of 5.00 . What is the magnitude of the normal force exerted on the car by the walls of the cylinder at point A (at the bottom of the vertical circle)? What is the magnitude of the normal force exerted on the car by the walls of the cylinder at point B (at the top of the vertical circle)?

A small steel ball bearing with a mass of 22.0 g

A small steel ball bearing with a mass of 22.0 g is on a short compressed spring. When aimed vertically and suddenly released, the spring sends the bearing to a height of 1.39 m. Calculate the horizontal distance the ball would travel if the same spring were aimed 28.0 deg from the horizontal.

A small remote-control car with a mass of 1.69 kg moves

A small remote-control car with a mass of 1.69 kg moves at a constant speed of v = 12.0 m/s in a vertical circle inside a hollow metal cylinder that has a radius of 5.00 m.

A laser beam is incident on a 34°-56°-90° prism perpendicular to

A laser beam is incident on a 34°-56°-90° prism perpendicular to one of its faces, as shown in the figure below. The transmitted beam that exits the hypotenuse of the prism makes an angle of 15° with the direction of the incident beam. Find the index of refraction of the prism. (Use the following as necessary: θ1 = 15°, θ2 = 34°)

A ball is projected straight up from the ground with initial

A ball is projected straight up from the ground with initial speed v0=200m/s and when it falls back it hits the ground with speed v1=50m/s. The mass of the ball is m=20g. What is the total work done by the drag force while the ball is in the air?

A spaceship is in orbit around the earth at an altitude

A spaceship is in orbit around the earth at an altitude of 12,000 miles. Which one of the following statements best explains why the astronauts experience “weightlessness”

Sam, whose mass is 61.0 , takes off down a 45.0

Sam, whose mass is 61.0 , takes off down a 45.0 high, 11.0 slope on his jet-powered skis. The skis have a thrust of 190 . Sam’s speed at the bottom is 35.0 . What is the coefficient of kinetic friction of his skis on snow?

Two crates, of mass m_1 = 65 kg and m_2 =

Two crates, of mass m_1 = 65 kg and m_2 = 128 kg, are in contact and at rest on a horizontal surface. A 680 N force is exerted on the 65 kg crate.

A rocket of total mass M and with burnout mass 0.20

A rocket of total mass M and with burnout mass 0.20 M attains a speed of 3 200 m/s after starting from rest in deep space. What is the exhaust velocity of the rocket?

Sam, whose mass is 66.0 , takes off down a 46.0

Sam, whose mass is 66.0 , takes off down a 46.0 high, 10.0 slope on his jet-powered skis. The skis have a thrust of 200 . Sam’s speed at the bottom is 43.0 . What is the coefficient of kinetic friction of his skis on snow?

A 50.0 ball of clay traveling east at 8.00 collides and

Get college assignment help at uniessay writers A 50.0 ball of clay traveling east at 8.00 collides and sticks together with a 40.0 ball of clay traveling north at 8.00 .What is the speed of the resulting ball of clay?

A car with a mass of 950-kg and an initial speed

A car with a mass of 950-kg and an initial speed of v1 = 21.5 m/s approaches an intersection, as shown in the figure. A 1300-kg minivan traveling northward is heading for the same intersection. The car and minivan collide and stick together. Suppose the direction of the wreckage after the collision is 35.0° above the x axis.

peg is located a distance h directly below the point of

peg is located a distance h directly below the point of attachment of the cord. If h = 0.90 L, what will be the speed of the ball when it reaches the top of its circular path about the peg? (Use the following as necessary: g and L.)

A mass of 5.60 kg rests on a smooth surface inclined

A mass of 5.60 kg rests on a smooth surface inclined 28.5o above the horizontal. It is kept from sliding down the plane by a spring attached to the wall. the spring is aligned with the plane and has a spring constant of 133 N/m. How much does the spring stretch?

A 0.265 kg skeet (clay target) is fired at an angle

A 0.265 kg skeet (clay target) is fired at an angle of 29 degrees to the horizon with a speed of 29.9 m/s. When it reaches the maximum height, h, it is hit from below by a 15m g pellet traveling vertically upward at a speed of 188 m/s. The pellet is embedded in the skeet.

A centrifuge rotor rotating at 1.00×104 is shut off and is

A centrifuge rotor rotating at 1.00×104 is shut off and is eventually brought uniformly to rest by a frictional torque of 1.05 .

A rocket of mass 4.5 x 10^4 kg is in space

A rocket of mass 4.5 x 10^4 kg is in space where gravity is negligible. If the rocket expels 150.0 g of hot gasses with a speed of 2.0 x 10^3 m/s, how much speed will the rocket gain?

a. What should you tell the prospective employer? b. What type

a. What should you tell the prospective employer? b. What type of information would you tell the prospective employer? c. How would what you share be to your advantage or disadvanta

Two horizontal forces, 221 N and 126 N, are exerted in

Two horizontal forces, 221 N and 126 N, are exerted in opposite directions on a crate. What is the net horizontal force on the create? Be sure to indicate the direction of the net force. (Assume that the 221 N force is in the positive direction.)

A long wire lying along the x-axis carries a current of

A long wire lying along the x-axis carries a current of 1.00A in the x direction. There is a uniform magnetic field present, given by B=0.003 i 0.004 j 0.002 k, where i,j,k are the unit vectors along the cartesian coordinate axes in units of Tesla. Calculate the y-component of the magnetic force acting on a segment of wire of length L = 12.5cm.

A backpack full of books weighing 50.0 rests on a table

A backpack full of books weighing 50.0 rests on a table in a physics laboratory classroom. A spring with a force constant of 130 is attached to the backpack and pulled horizontally, as indicated in the figure .

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